Force system of 3D-printed orthodontic aligners made of shape memory polymers: an in vitro study

References

• Ashari A, Mohamed AM. Relationship of the dental aesthetic index to the oral health-related quality of life. Angle Orthod. 2016;86(2):337–342. doi:10.2319/121014-896.1
   PubMed Web of Science ®Google Scholar
• Elhaddaoui R, Qoraich HS, Bahije L, et al. Orthodontic aligners and root resorption: a systematic review. Int Orthod. 2017;15(1):1–12.
   Google Scholar
• Moutawakil A. Biomechanics of aligners: literature review. Adv Dent Oral Heal. 2021: 13, doi:10.19080/ADOH.2020.13.555872
   Google Scholar
• Upadhyay M, Arqub SA. Biomechanics of clear aligners: hidden truths & first principles. J World Fed Orthod. 2022;11(1):12–21. doi:10.1016/j.ejwf.2021.11.002
   PubMed Web of Science ®Google Scholar
• Elshazly TM, Keilig L, Alkabani Y, et al. Potential application of 4D technology in fabrication of orthodontic aligners. Front Mater. 2022;8:794536, doi:10.3389/fmats.2021.794536
   Web of Science ®Google Scholar
• Liu DS, Chen YT. Effect of thermoplastic appliance thickness on initial stress distribution in periodontal ligament. Adv Mech Eng. 2015;7(4):1687814015578362.
   Web of Science ®Google Scholar
• Hahn W, Dathe H, Fialka-Fricke J, et al. Create your own stimulus package and improve access to care. Am J Orthod Dentofac Orthop. 2009;136(1):e1–12.e7. doi:10.1016/j.ajodo.2009.05.003
   PubMed Web of Science ®Google Scholar
• Elshazly TM, Bourauel C, Aldesoki M, et al. Computer-aided finite element model for biomechanical analysis of orthodontic aligners. Clin Oral Investig. 2023;27(1):115–124. doi:10.1007/s00784-022-04692-7
   PubMed Web of Science ®Google Scholar
• Elshazly TM, Salvatori D, Elattar H, et al. Effect of trimming line design and edge extension of orthodontic aligners on force transmission: A 3D finite element study. J Mech Behav Biomed Mater. 2023: 105741, doi:10.1016/j.jmbbm.2023.105741
   PubMed Web of Science ®Google Scholar
• Elshazly TM, Bourauel C, Chavanne P, et al. Numerical biomechanical finite element analysis of different trimming line designs of orthodontic aligners: an in silico study. J World Fed Orthod. 2024;13(2):65–71. doi:10.1016/j.ejwf.2024.01.001
   PubMed Web of Science ®Google Scholar
• Min S, Hwang CJ, Yu HS, et al. Longitudinal measurements of tooth mobility following orthodontic treatment. Korean J Orthod. 2010;40(1):34–26. doi:10.4041/kjod.2010.40.1.34
   Web of Science ®Google Scholar
• Elshazly TM, Bourauel C, Aldesoki M, et al. Effect of attachment configuration and trim line design on the force system of orthodontic aligners: a finite element study on the upper central incisor. Orthod Craniofacial Res. 2024. doi:10.1111/ocr.12779
   PubMed Web of Science ®Google Scholar
• Elkholy F, Mikhaiel B, Repky S, et al. Effect of different attachment geometries on the mechanical load exerted by PET-G aligners during derotation of mandibular canines. J Orofac Orthop der Kieferorthopaedie. 2019;80(6):315–326. doi:10.1007/s00056-019-00193-7
   PubMed Web of Science ®Google Scholar
• Cremonini F, Vianello M, Bianchi A, et al. A spectrophotometry evaluation of clear aligners transparency: comparison of 3D-printers and thermoforming disks in different combinations. Appl Sci. 2022;12(23):11964, doi:10.3390/app122311964
   Google Scholar
• Momtaz P. (2016). The effect of attachment placement and location on rotational control of conical teeth using clear aligner therapy.
   Google Scholar
• Thukral R, Gupta A. Invisalign: invisible orthodontic treatment-a review. J Adv Med Dent Sci Res. 2015;3(5):S42.
   Google Scholar
• Martorelli M, Gerbino S, Giudice M, et al. A comparison between customized clear and removable orthodontic appliances manufactured using RP and CNC techniques. Dent Mater. 2013;29(2):e1–e10. doi:10.1016/j.dental.2012.10.011
   PubMed Web of Science ®Google Scholar
• Elshazly TM, Keilig L, Alkabani Y, et al. Primary evaluation of shape recovery of orthodontic aligners fabricated from shape memory polymer (a typodont study). Dent J. 2021;9(3):31, doi:10.3390/dj9030031
   Google Scholar
• Lombardo L, Martines E, Mazzanti V, et al. Stress relaxation properties of four orthodontic aligner materials: a 24-hour in vitro study. Angle Orthod. 2016;87(1):11–18. doi:10.2319/113015-813.1
   PubMed Web of Science ®Google Scholar
• Atta I, Bourauel C, Alkabani Y, et al. Physiochemical and mechanical characterisation of orthodontic 3D printed aligner material made of shape memory polymers (4D aligner material). J Mech Behav Biomed Mater. 2023;150:106337.
   PubMed Web of Science ®Google Scholar
• Meng H, Li G. A review of stimuli-responsive shape memory polymer composites. Polymer (Guildf). 2013;54(9):2199–2221. doi:10.1016/j.polymer.2013.02.023
   Web of Science ®Google Scholar
• Lendlein A, Kelch S. Shape-memory polymers. Angew Chemie Int Ed. 2002;41(12):2034–2057. doi:10.1002/1521-3773(20020617)41:12<2034::AID-ANIE2034>3.0.CO;2-M
   Web of Science ®Google Scholar
• Liu C, Qin H, Mather PT. Review of progress in shape-memory polymers. J Mater Chem. 2007;17(16):1543–1558. doi:10.1039/b615954k
   Web of Science ®Google Scholar
• Behl M, Lendlein A. Shape-memory polymers. Mater Today. 2007;10(4):20–28. doi:10.1016/S1369-7021(07)70047-0
   Web of Science ®Google Scholar
• Panayi NC. Directly printed aligner: aligning with the future. Turkish J Orthod. 2023;36(1):62, doi:10.4274/TurkJOrthod.2023.2023.20
   PubMed Web of Science ®Google Scholar
• Zecca PA, Bocchieri S, Borgese M, et al. In vitro investigation of the mechanical properties of blended 3D-printing resins for orthodontic aligners: a comparison between commercial resin and nickel-titanium wire. Appl Sci. 2023;13(15):9020, doi:10.3390/app13159020
   Google Scholar
• Golkhani B, Weber A, Keilig L, et al. Variation of the modulus of elasticity of aligner foil sheet materials due to thermoforming. J Orofac Orthop der Kieferorthopädie. 2022;83(4):233–243. doi:10.1007/s00056-021-00327-w
   PubMed Web of Science ®Google Scholar
• Ryu JH, Kwon JS, Jiang HB, et al. Effects of thermoforming on the physical and mechanical properties of thermoplastic materials for transparent orthodontic aligners. Korean J Orthod. 2018;48(5):316–325. doi:10.4041/kjod.2018.48.5.316
   PubMed Web of Science ®Google Scholar
• Seo JH, Eghan-Acquah E, Kim MS, et al. Comparative analysis of stress in the periodontal ligament and center of rotation in the tooth after orthodontic treatment depending on clear aligner thickness – finite element analysis study. Materials (Basel). 2021;14(2):324, doi:10.3390/ma14020324
   PubMed Web of Science ®Google Scholar
• Park SY, Choi SH, Yu HS, et al. Comparison of translucency, thickness, and gap width of thermoformed and 3D-printed clear aligners using micro-CT and spectrophotometer. Sci Rep. 2023;13(1):10921, doi:10.1038/s41598-023-36851-5
   PubMed Web of Science ®Google Scholar
• Can E, Panayi N, Polychronis G, et al. In-house 3D-printed aligners: effect of in vivo ageing on mechanical properties. Eur J Orthod. 2022;44(1):51–55. doi:10.1093/ejo/cjab022
   PubMed Web of Science ®Google Scholar
• Tartaglia GM, Mapelli A, Maspero C, et al. Direct 3D printing of clear orthodontic aligners: current state and future possibilities. Materials (Basel). 2021;14(7):1799, doi:10.3390/ma14071799
   PubMed Web of Science ®Google Scholar
• Panayi N, Cha JY, Kim KB. 3D printed aligners: material science, workflow and Clinical applications. Seminars in Orthodontics; 2023;29:25–33.
   Google Scholar
• Elshazly TM, Keilig L, Salvatori D, et al. Effect of trimming line design and edge extension of orthodontic aligners on force transmission: an in vitro study. J Dent. 2022;125:104276, doi:10.1016/j.jdent.2022.104276
   PubMed Web of Science ®Google Scholar
• Bourauel C, Drescher D, Thier M. An experimental apparatus for the simulation of three-dimensional movements in orthodontics. J Biomed Eng. 1992;14(5):371–378. doi:10.1016/0141-5425(92)90081-U
   PubMedGoogle Scholar
• Drescher D, Bourauel C, Thier M. Application of the orthodontic measurement and simulation system (OMSS) in orthodontics. Eur J Orthod. 1991;13(3):169–178. doi:10.1093/ejo/13.3.169
   PubMed Web of Science ®Google Scholar
• Hahn W, Zapf A, Dathe H, et al. Torquing an upper central incisor with aligners acting forces and biomechanical principles. Eur J Orthod. 2010;32(6):607–613. doi:10.1093/ejo/cjq007
   PubMed Web of Science ®Google Scholar
• Barbur I, Opris H, Crisan B, et al. Statistical comparison of the mechanical properties of 3D-printed resin through triple-jetting technology and conventional PMMA in orthodontic occlusal splint manufacturing. Biomedicines. 2023;11(8):2155, doi:10.3390/biomedicines11082155
   PubMed Web of Science ®Google Scholar
• Lee SY, Kim H, Kim HJ, et al. Management of validation of HPLC method for determination of acetylsalicylic acid impurities in a new pharmaceutical product. Sci Rep. 2022;12(1):1–10. doi:10.1038/s41598-021-99269-x
   PubMed Web of Science ®Google Scholar
• Kwon JS, Lee YK, Lim BS, et al. Force delivery properties of thermoplastic orthodontic materials. Am J Orthod Dentofac Orthop. 2008;133(2):228–234. doi:10.1016/j.ajodo.2006.03.034
   PubMed Web of Science ®Google Scholar
• Cremonini F, Vianello M, Bianchi A, et al. The effect of thickness and deflection of orthodontic thermoplastic materials on its mechanical properties. Dent J. 2019;85(5):16–26.
   Google Scholar
• Proffit WR, Fields Jr HW, Sarver DM. Contemporary orthodontics. St. Louis: Elsevier; 2000.
   Google Scholar
• Hunter CA, Sanders JKM. The nature of .pi.-.pi. interactions. J Am Chem Soc. 1990;112(14):5525–5534. doi:10.1021/ja00170a016
   Web of Science ®Google Scholar
• Olabis O. Polymer-Polymer Miscibility. Elsevier; 2012.
   Google Scholar
• Zin MH, Abdan K, Norizan MN. The effect of different fiber loading on flexural and thermal properties of banana/pineapple leaf (PALF)/glass hybrid composite. In: Structural health monitoring of biocomposites, fibre-reinforced composites and hybrid composites. Woodhead Publishing; 2019. p. 1–17.
   Google Scholar
• Elshazly TM, Nang D, Golkhani B, et al. Effect of thermomechanical aging of orthodontic aligners on force and torque generation: an in vitro study. J Mech Behav Biomed Mater. 2023;143:105911, doi:10.1016/j.jmbbm.2023.105911
   PubMed Web of Science ®Google Scholar
• Hahn W, Fialka-Fricke J, Dathe H, et al. Initial forces generated by three types of thermoplastic appliances on an upper central incisor during tipping. Eur J Orthod. 2009;31(6):625–631. doi:10.1093/ejo/cjp047
   PubMed Web of Science ®Google Scholar
• Elkholy F, Mikhaiel B, Schmidt F, et al. Mechanical load exerted by PET-G aligners during mesial and distal derotation of a mandibular canine. J Orofac Orthop. 2017;78:361–370. doi:10.1007/s00056-017-0090-4
   PubMed Web of Science ®Google Scholar
• Elkholy F, Schmidt F, Jäger R, et al. Forces and moments applied during derotation of a maxillary central incisor with thinner aligners: an in-vitro study. Am J Orthod Dentofac Orthop. 2017;151(2):407–415. doi:10.1016/j.ajodo.2016.08.020
   PubMed Web of Science ®Google Scholar
• Engelke B. (2010). Kraft-und Drehmomentabgabe thermoplastisch geformter Schienen bei Frontzahnderotation vor und nach Alterungssimulation. ediss.uni-goettingen.
   Google Scholar
• Kohda N, Iijima M, Muguruma T, et al. Effects of mechanical properties of thermoplastic materials on the initial force of thermoplastic appliances. Angle Orthod. 2013;83(3):476–483. doi:10.2319/052512-432.1
   PubMed Web of Science ®Google Scholar
• Hertan E, McCray J, Bankhead B, et al. Force profile assessment of direct-printed aligners versus thermoformed aligners and the effects of non-engaged surface patterns. Prog Orthod. 2022;23(1):49, doi:10.1186/s40510-022-00443-2
   PubMed Web of Science ®Google Scholar
• Grant J, Foley P, Bankhead B, et al. Forces and moments generated by 3D direct printed clear aligners of varying labial and lingual thicknesses during lingual movement of maxillary central incisor: an in vitro study. Prog Orthod. 2023;24(1):23, doi:10.1186/s40510-023-00475-2
   PubMed Web of Science ®Google Scholar
• Elshazly TM, Nang D, Golkhani B, et al. Effect of aging of orthodontic aligners in different storage media on force and torque generation: an in vitro study. Oral. 2023;3(1):67–76. doi:10.3390/oral3010007
   Google Scholar
• Elshazly TM, Keilig L, Nang D, et al. Effect of thermomechanical aging on force system of orthodontic aligners made of different thermoformed materials. J Orofac Orthop der Kieferorthopädie. 2024: 1–9. doi:10.1007/s00056-024-00527-0
   Google Scholar